cooking.nytimes.com
This sandwich takes advantage of late-summer’s bounty, with a pile of vegetables set between two layers of focaccia. It takes about half an hour to prepare. You’ll glaze some sliced onions with garlic, lemon and olive oil, chop and sauté the vegetables you happen to have on hand, and then layer it all with slices of your best tomatoes, some cheese and chopped olives. A smear of mayonnaise helps stick the whole thing together.